POPCHAIN CASH

0xe3f4b4a5d91e5cb9435b947f090a319737036312

transferOwnership keyboard_arrow_up

    function transferOwnership(address _newOwner) public onlyOwner {
        require(_newOwner != address(0));
        newOwner = _newOwner;
    }

acceptOwnership keyboard_arrow_up

    function acceptOwnership() public onlyNewOwner returns(bool) {
        uint256 ownerAmount = _balances[owner];
        _balances[owner] = _balances[owner].sub(ownerAmount);
        _balances[newOwner] = _balances[newOwner].add(ownerAmount);
        emit Transfer(owner, newOwner, ownerAmount);   
        owner = newOwner;
        newOwner = address(0);
        emit OwnershipTransferred(owner, newOwner);

        return true;
    }

totalSupply keyboard_arrow_up

    function totalSupply() public view returns (uint256) {
        return _totalSupply;
    }

balanceOf keyboard_arrow_up

    function balanceOf(address _holder) public view returns (uint256 balance) {
        return _balances[_holder].add(_lockupBalances[_holder]);
    }

allowance keyboard_arrow_up

    function allowance(address _holder, address _spender) public view returns (uint256) {
        return _allowed[_holder][_spender];
    }

transfer keyboard_arrow_up

    function transfer(address _to, uint256 _value) public returns (bool) {
        require(_to != address(0));
        require(_to != address(this));
        require(msg.sender != address(0));
        require(_value <= _balances[msg.sender]);

        // SafeMath.sub will throw if there is not enough balance.
        _balances[msg.sender] = _balances[msg.sender].sub(_value);
        _balances[_to] = _balances[_to].add(_value);
        emit Transfer(msg.sender, _to, _value);
        return true;
    }

transferFrom keyboard_arrow_up

    function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
        require(_from != address(0));
        require(_to != address(0));
        require(_to != address(this));
        require(_value <= _balances[_from]);
        require(_value <= _allowed[_from][msg.sender]);

        _balances[_from] = _balances[_from].sub(_value);
        _balances[_to] = _balances[_to].add(_value);
        _allowed[_from][msg.sender] = _allowed[_from][msg.sender].sub(_value);
        emit Transfer(_from, _to, _value);
        return true;
    }

approve keyboard_arrow_up

    function approve(address _spender, uint256 _value) public returns (bool) {
        require(_value > 0);
        _allowed[msg.sender][_spender] = _value;
        emit Approval(msg.sender, _spender, _value);
        return true;
    }

lockupBalanceOf keyboard_arrow_up

    function lockupBalanceOf(address _holder) public view returns (uint256 balance) {
        return _lockupBalances[_holder];
    }

unlockTimeOf keyboard_arrow_up

    function unlockTimeOf(address _holder) public view returns (uint256 lockTime) {
        return _lockupExpireTime[_holder];
    }

constructor keyboard_arrow_up

    function () public payable {
        revert();
    }

burn keyboard_arrow_up

    function burn(uint256 _value) public onlyOwner returns (bool success) {
        require(_value <= _balances[msg.sender]);
        address burner = msg.sender;
        _balances[burner] = _balances[burner].sub(_value);
        _totalSupply = _totalSupply.sub(_value);
        return true;
    }

distribute keyboard_arrow_up

    function distribute(address _to, uint256 _value, uint256 _lockupRate) public onlyOwner returns (bool) {
        require(_to != address(0));
        require(_to != address(this));
        //Do not allow multiple distributions of the same address. Avoid locking time reset.
        require(_lockupBalances[_to] == 0);     
        require(_value <= _balances[owner]);
        require(_lockupRate == 50 || _lockupRate == 100);

        _balances[owner] = _balances[owner].sub(_value);

        uint256 lockupValue = _value.mul(_lockupRate).div(100);
        uint256 givenValue = _value.sub(lockupValue);
        uint256 ExpireTime = now + LOCKUP_TERM; //six months

        if (_lockupRate == 100) {
            ExpireTime += LOCKUP_TERM;          //one year.
        }
        
        _balances[_to] = _balances[_to].add(givenValue);
        _lockupBalances[_to] = _lockupBalances[_to].add(lockupValue);
        _lockupExpireTime[_to] = ExpireTime;

        emit Transfer(owner, _to, _value);
        return true;
    }

unlock keyboard_arrow_up

    function unlock() public returns(bool) {
        address tokenHolder = msg.sender;
        require(_lockupBalances[tokenHolder] > 0);
        require(_lockupExpireTime[tokenHolder] <= now);

        uint256 value = _lockupBalances[tokenHolder];

        _balances[tokenHolder] = _balances[tokenHolder].add(value);  
        _lockupBalances[tokenHolder] = 0;

        return true;
    }